SPSC – Sindh Public Service Commission 2021 Past Paper with Answers

Practice the SPSC – Sindh Public Service Commission 2021 past paper with 423 solved MCQs, answers and topic coverage.

423 solved MCQs across 8 approved papers

SPSC - ASI Past Paper 2021 (Morning)SPSC - ASI · 2021 SPSC - Combined Competitive Examination Past Paper 08-08-2021SPSC - Combined Competitive Examination · 2021 SPSC - Lecturer Botany Past Paper 2021 (Evening)SPSC - Lecturer Botany · 2021 SPSC - Lecturer Botany Past Paper 2021 (Morning)SPSC - Lecturer Botany · 2021 SPSC - Lecturer Chemistry Past Paper 2021 (Evening)SPSC - Lecturer Chemistry · 2021 SPSC - Lecturer Chemistry Past Paper 2021 (Morning)SPSC - Lecturer Chemistry · 2021 SPSC - Lecturer Physics Past Paper 2021 (Evening)SPSC - Lecturer Physics · 2021 SPSC - Lecturer Physics Past Paper 2021 (Morning)SPSC - Lecturer Physics · 2021

Gaussian distribution is characterized by the ______ and the ______?Answer: Mean; Standard deviation Foam is an example of _____?Answer: A gas dispersed in a liquid Peptization involves _______?Answer: Disintegration of colloidal particles An empty Erlenmeyer flask weighs 100 g. When filled with liquid (d = 1.5 g/cm³), the flask and its contents weigh 250 g. What is the flask’s volume?Answer: 100 cm³ Which of the following molecule is inactive in the infrared spectrum?Answer: N₂ Boyle’s and Charles’s Laws are readily explained in terms of the _______?Answer: Kinetic molecular theory In which of the following reactions is a new carbon-carbon bond not formed?Answer: Cannizzaro reaction The hybridization of a carbocation is?Answer: sp² Which of the following possesses linear geometry?Answer: Alkyne Compounds having the same molecular formula but different structures are called ______?Answer: Isomers The Ksp value is constant for a particular _____?Answer: Temperature A sample of dichloroacetic acid (MW = 128.94 g/mol) weighing 6.447 g is dissolved in water in a 500 mL volumetric flask. The resulting formality of the solution is?Answer: 0.100 F Who was the first scientist to arrange elements in different categories?Answer: Mendeleev Which gas is used in filling weather balloons?Answer: Helium Oxygen atom contain 8 protons, 8 electrons ______ neutrons.Answer: 8 Which of the following have positive value for heat?Answer: None of these Which one of the following is more energetic?Answer: 4f When 3p orbital is complete entering electron will go to ______?Answer: 4s Gases conduct electricity at _____?Answer: Low pressure Who prepared the centigrade scale?Answer: Celsius White Chromium II metal complexes in open change in colour ______?Answer: Green The gases which do not obey gas laws at all temperature and pressure are called?Answer: Real The metal which forms rose red precipitate with DMG is ______?Answer: Ni The amount of Chromium in stainless steel is _____?Answer: 18% The colour of Chromium II complex in open air change to _______?Answer: Green EDTA is called which ligand?Answer: Polydentate Air pollution is caused by ______?Answer: Hydrocarbons A mixture of potassium and calcium silicates formed _____?Answer: Hard glass Ignition of Fe(OH)₃ to give Fe₂O₃ is called?Answer: Dehydration Sulphuric acid is a _______ acid.Answer: Oxoacid